I am still new to cycling and am not sure if my knee pain is because of overuse or injury. I rode 30 miles on Saturday--10 to get breakfast and then 20 back home. (We took the scenic route). On the way home I had a minor fall. I unclipped one foot at a stop light, but then leaned the wrong way and fell. I hit my elbow and knee. They are scraped but nothing major. Got up, finished the ride. Then on Sunday we did a similar ride. 10 miles to breakfast and 17 back home. Now the back of my knee is hurting a lot. It hurts mostly to bend it. I'm just not sure if it's hurting because I rode 2 days in a row or because I fell. I had lateral release surgery on both knees 6 years ago, but cycling is one thing that usually doesn't bother my knees too much. (except for big hills and standing to pedal). Any thoughts? Do I let it be for awhile or see a doctor? I've been taking Motrin and it isn't doing anything for the pain. It was really hard to sleep last night--just couldn't get comfortable. Thanks!!